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M2M4method-SNR-estimation
一种基于信号二阶四阶矩的信噪比估计方法，该文件中包含该方法的文章以及matlab程序。(This estimation method is based on the signal second-order signal-to-noise ratio of the fourth moment. The file contains a paper and a code.)
- 2020-12-01 19:39:26下载
- 积分：1
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05441004
Multiple input multiple output techniques combined
with orthogonal frequency division multiplexing (MIMO-OFDM)
provide a promising approach for wireless systems. However, a
serious drawback of the OFDM system is the high peak-toaverage
power ratio (PAPR), which may severely affect the
power efficiency of RF power amplifiers. In this paper, we
propose a simple method to reduce the PAPR of MIMO-OFDM
signals based on the use of unused subcarriers. Instead of
processing the signals at each transmitter separately, a peak
cancelling signal is generated at one antenna and is then applied
to all the others with only simple modifications. Simulation has
shown that a minimum 2 dB reduction in PAPR can be achieved
for all transmit signals using this approach. As the signal
processing is nearly all done at a single transmitter, repetition of
the operations at each transmitter is avoided, and therefore the
overall cost of the system can be significantly reduced.
- 2011-11-05 01:46:42下载
- 积分：1
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IEEE802.15.4a
ieee802.15.4a信道模型.是2-10G部分，是SV模型(ieee802.15.4a channel model )
- 2011-05-16 21:40:58下载
- 积分：1
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del83145235244
说明： 服务通讯程序，采用服务+客户端模式，有源代码可以自己修改研究(Services, communication procedures, using service+ client mode, the active code can modify their own research)
- 2010-03-29 16:29:18下载
- 积分：1
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ethernet_mac-master
说明： ethernet mac vhdl verilog basic
- 2019-03-30 15:47:25下载
- 积分：1
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Leture-notes-on-network-information-theory
Very good reference materials on network information theory
- 2011-07-22 16:20:21下载
- 积分：1
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time_frequency
这是一篇现代通信原理课程的作业报告.题目为几种时频分析方法比较及应用.详细介绍了短时傅里叶变换、小波变换、魏格纳—威利分布和Cohen类时频分布这4种典型时频分析方法,并作了比较(This is a modern communication Principle operating report. Entitled Comparison of several time-frequency analysis and 应用. 详细 Jieshao the short time Fourier transform, wavelet transform, Wigner- Willie distribution and frequency distribution of Cohen Lei This four kinds of typical time-frequency analysis method, and compared)
- 2010-07-12 22:12:25下载
- 积分：1
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DPSK_PCM_TDM
利用matlab simulink产生两路模拟语音信号，经过pcm编码、时分复用、DPSK调制经过同一个信道单向传输到对应的接收端。常用的三个模块 simulink、通信模块、信号处理模块。包括课程设计报告。(Using matlab simulink produce two analog voice signals through the pcm encoding, time division multiplexing, DPSK modulation over the same one-way transmission channel to a corresponding receiver. The three modules used simulink, communication module, a signal processing module. Including curriculum design report.)
- 2021-03-22 20:39:16下载
- 积分：1
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Spread-spectrum
This document describes about the digital modulation techniques especially about spread spectrum.
- 2012-07-06 15:46:04下载
- 积分：1
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汽车行业CAN通讯SAEJ1939标准英文版
说明： 汽车行业CAN通讯SAEJ1939标准英文版(Auto Industry CAN Communication SAEJ1939 Standard English Edition)
- 2020-06-18 00:20:01下载
- 积分：1
